Animation project renders in pink?
All External Data i.e. images, scripts, VSE Strips, etc. are found and utilized through a Path. A Path may look something like the following, which would use Image.png and find it on my Desktop.

/Users/ShadyPuck/Desktop/Image.png

If the Path leads to a directory that doesn't exist or attempts to use an Image Name that isn't in that directory (in other words, it can't find the file), Blender will return pink.

What you need to do is locate the correct files for each pink instance in Blender's File Browser window.